DE631344C - Cassette with supply and take-up core - Google Patents

Description

Cassette with supply and take-up core There are recording processes known, in which on a picture book provided with perforations on both sides opposing, adjacent rows of images are arranged.

The invention relates to a cassette with a supply core and a take-up core for cinematographic recording apparatus, which for the purpose of exposing the contained in it Films in two rows engaged with the camera mechanism in two positions and aims to prevent double exposure.

With the devices that have been used up to now, it is common to use the wound To connect the film to the supply core only loosely, possibly not to it at all to be attached, whereas the beginning of the film is firmly connected to the take-up core.

The invention now consists in putting the film in a cassette of the above described type with the core serving as a supply core in the first pass to be inextricably linked, but only to close it at the corresponding take-up core attach that the film is carried along when the core is rotated in the winding direction is, however, easily peeled off from this core by the film pull when the film runs off can be. Such a cassette is extremely easy to use. Naturally make sure that the cassette is correctly inserted in the first exposure Machine is inserted. It is therefore advisable to put a note on the cassette, in which position it must be inserted into the camera for the first row of images.

The user is ordinary because of the movie clock attached to the apparatus Already sufficiently informed about which film supply is still available for the recording Available. If the film has expired, it is also due to the easy immediately informed that the film is from the unwinder core has expired and he will move the cartridge immediately.

The film itself is, as it is because of its inextricable attachment to the Supply core can not leave the cassette, so remained in its guides that in the case of cassettes with an external loop, the threading of the film after the transfer can be done again immediately, while such a threading with cassettes compensating means arranged within for the transition from the continuous is not necessary for discontinuous movement.

Damage to the film tape from suddenly holding it are not to fear because of the pull of the gripper and the transport mechanism as a result of the low image height and the 'umlaufei @ t to be broken off; the masses are in themselves extraordinarily ge. `If the user has taken the second row of images', so the film has run out of its guides and on which now the take-up core forming core wound. Since a new insertion is now impossible without the When the cassette is opened, the user knows that the film is now provided with two rows of images and must therefore be sent in for development.

For photographic recording apparatus, film cassettes with two spools are used known to which the ends of the film are attached in the same way as the characterizing part of the claim prescribes it. In such a cassette the film becomes during the exposure. rolled back and forth after exposure, without the position of the box between rolling back and forth of the movie is changed.

Claims (1)

PATENT CLAIM: Cassette with supply and take-up core for cinematographic Recording apparatus, which for the purpose of exposing the film contained in it in two Rows is engaged with the camera mechanism in two positions, thereby characterized in that the film is attached to the one serving as the supply core on the first pass Core operationally unsolvable, on the other hand on the corresponding take-up core by the Film train is easily detachable attached.